package com.hyf.ucenter.mapper;

import com.hyf.ucenter.entity.Member;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author hyf
 * @since 2021-09-24
 */
public interface MemberMapper extends BaseMapper<Member> {
	
	// 查询一天注册人数
	Integer countRegisterDay(String day);
}
